Evaluation of thermal losses for welded structures

Elkihel, Ali; Bakdid, Amar; Jeffali, F.; Gziri, Hassan

doi:10.1016/j.matpr.2020.06.098

Cited by 1 publication

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They could detect a cluster pore of size 0.6 mm × 0.4 mm by means of passive thermography. Elkihel et al [ 122 ] studied the thermal propagation of a weld joint using an active thermography method. They heated the weld joint inductively up to 80 °C and captured the heat propagation on the weld joint using an FLIR T440 infrared camera with a resolution of 320 × 240 and a bandwidth of 7.5 to 13 µm pixels.…”

Section: Thermographymentioning

confidence: 99%

A Review of Non-Destructive Testing (NDT) Techniques for Defect Detection: Application to Fusion Welding and Future Wire Arc Additive Manufacturing Processes

et al. 2022

View full text Add to dashboard Cite

In Wire and Arc Additive Manufacturing (WAAM) and fusion welding, various defects such as porosity, cracks, deformation and lack of fusion can occur during the fabrication process. These have a strong impact on the mechanical properties and can also lead to failure of the manufactured parts during service. These defects can be recognized using non-destructive testing (NDT) methods so that the examined workpiece is not harmed. This paper provides a comprehensive overview of various NDT techniques for WAAM and fusion welding, including laser-ultrasonic, acoustic emission with an airborne optical microphone, optical emission spectroscopy, laser-induced breakdown spectroscopy, laser opto-ultrasonic dual detection, thermography and also in-process defect detection via weld current monitoring with an oscilloscope. In addition, the novel research conducted, its operating principle and the equipment required to perform these techniques are presented. The minimum defect size that can be identified via NDT methods has been obtained from previous academic research or from tests carried out by companies. The use of these techniques in WAAM and fusion welding applications makes it possible to detect defects and to take a step towards the production of high-quality final components.

show abstract

Section: Thermographymentioning

confidence: 99%